Used metaphorically to tell someone to stop meddling in others' affairs or discussions.

Non-literal use

It's a casual phrase and may be considered rude in formal conversations.

Informal

Can sound confrontational; used with caution to avoid escalating conflicts.

Refers to the act of putting out a cigarette or cigar, not general smoking cessation.

Suggests stopping smoking immediately, often for a temporary reason like entering a building.

Implies an awareness of others' comfort or health, especially in public spaces.